15ME53T: Machine Design Mechanical 5th Sem Syllabus for Diploma DTE Karnataka C15 Scheme

Machine Design detail DTE Kar Diploma syllabus for Mechanical Engineering (General) (ME), C15 scheme is extracted from DTE Karnataka official website and presented for diploma students. The course code (15ME53T), and for exam duration, Teaching Hr/week, Practical Hr/week, Total Marks, internal marks, theory marks, duration and credits do visit complete sem subjects post given below. The syllabus PDFs can be downloaded from official website.

For all other mechanical 5th sem syllabus for diploma c15 scheme dte karnataka you can visit Mechanical 5th Sem Syllabus for Diploma C15 Scheme DTE Karnataka Subjects. The detail syllabus for machine design is as follows.

Pre-requisites:

Knowledge of Mathematics, Engineering Mechanics, Strength of Materials, Theory of Machines, Machine drawing and Workshop Processes

Course Objectives:

This course curriculum provides the knowledge of design process, as well as enables the student to design simple machine components used in small and medium scale industries.

Course Outcomes:

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UNIT I: INTRODUCTION TO DESIGN 04Hrs

Machine Design-Classification-General considerations-Load-stress-strain,-stress-strain diagram for mild steel- Bending and torsion stress equations – Factor of Safety and Factors governing selection of factor of Safety- Stress Concentration – Causes & Remedies-Designation of materials as per IS- using of design data book – Concept of Theory of failuretypes.

UNIT II: DESIGN OF FASTENERS 12Hrs

Stresses in Screwed fasteners- bolts of Uniform Strength- Design of Bolts – Design of studs for cylinder cover-simple problems on design of bolts subjected to external force -Design of Riveted joints -classification- Important terms used in riveted joints-materials for rivets-Failures of riveted joints-Strength and efficiency of riveted joints-Simple problems on Single and Double riveted lap joint -Single and Double riveted Butt joint (with single and double strap)

UNIT III: DESIGN OF SHAFTS, KEYS 10Hrs

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UNIT IV: DESIGN OF SIMPLE MACHINE PARTS 14Hrs

Design of Couplings – Solid Muff Coupling- Flange coupling (Protected and Unprotected type) – Cotter Joint – Knuckle Joint

UNIT V: DESIGN OF SPRINGS 08Hrs

Spring – terminology, materials and specifications-Classification and Applications of Springs- Stresses in springs, Wahl’s correction factor, Deflection of springs-Design of Helical compression springs subjected to uniform applied loads like I.C. engine valves, weighing balance, railway buffers and governor springs-Problems on helical compression springs only- Leaf springs – Construction and application

UNIT VI: ERGONOMICS & AESTHETIC CONSIDERATION IN DESIGN 4Hrs

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Reference Books:

1. A Text book of Machine Design R.S. Khurmi & J.K.Gupta S. Chand publication
2. Machine design S G Kulkarni McGraw Hill Education Publications
3. Introduction to Machine design V B Bhandari McGraw Hill Education Publications
4. Design Of Machine Elements Vol I, Vol II J.B.K. Das , P.L. Srinivas Murthy Sapna Publication
5. Machine Component Design William Orthwein Jaico publication
6. Design Data Hand Book for Mechanical Engineers K Mahadevan & K Balaveera Reddy CBS publications

LIST SOFTWARES/WEBSITES

1. http://nptel.ac.in/courses/Webcourse-contents/IIT%20Kharagpur/Machine%20design1/left_home.html
2. http://nptel.ac.in/courses/Webcourse-contents/IIT%20Kharagpur/Machine%20design1/left_mod4.html
3. http://nptel.ac.in/courses/Webcourse-contents/IIT%20Kharagpur/Machine%20design1/left mod7.html.
4. http://nptel.ac.in/courses/Webcourse-contents/IIT%20Kharagpur/Machine%20design1/left mod4.html
5. http://nptel.ac.in/courses/Webcourse-contents/IIT%20Kharagpur/Machine%20design1/left mod5.html
6. http://nptel.ac.in/courses/Webcourse-contents/IIT%20Kharagpur/Machine%20design1/left_mod8.html

SPECIAL INSTRUCTIONAL STRATEGIES

1. INTRODUCTION TO DESIGN Lectures, Discussions ,cooperative learning group based learning, Think-Pair-share activities among group of students
2. DESIGN OF FASTENERS Lectures, discussions, cooperative learning group based learning, Think-Pair-share activities among group of students
3. DESIGN OF SHAFTS, KEYS Lectures, cooperative learning group based learning, Think-Pair-share activities among group of students
4. DESIGN OF SIMPLE MACHINE PARTS Lectures, cooperative learning group based learning, Think-Pair-share activities among group of students Industrial visits, movies.
5. DESIGN OF SPRINGS Lectures, cooperative learning group based learning, Think-Pair-share activities among group of students Industrial visits, movies
6. ERGONOMICS & AESTHETIC CONSIDERATION IN DESIGN Discussions, real life industries situation, industrial visits

Suggested List of Student Activities:

Note: the following activities or similar activities for assessing CIE (IA) for 5 marks (Any one)

• Each student should do any one of the following type activity or similar activity related to the course and before take up, get it approved from concerned Teacher and HOD.
• Each student should conduct different activity and no repeating should occur
1. The students should identify at least five applications .He should select the materials for identified applications by using design data hand book. List the mechanical properties of material selected.
2. Observe the system where transmission of power takes place through shaft, Keys, coupling, pulley and belt drive. Get the required information regarding power transmitted (power output by motoror engine etc). By selecting suitable materials, design the shaft, key and coupling.
3. Assignments on design of Helical Springs, Screwed joints, Riveted joints [one each] with free hand sketches.
4. The student should Download and present various presentations related to design of machine elements
5. The student should Download and present various presentations related to stresses in machine elements.
6. The student should Download and present various presentations related to failure of machine elements.

Model Question Paper:

(CIE)

1. Define factor of safety. List and explain the factors to be considered while selecting Factor of safety. OR Explain stress strain diagram of mild steel is differing from that of cast iron with necessary sketches.
2. A steam engine cylinder has an effective diameter of 350 mm and the maximum steam pressure acting on the cylinder cover is 1.25 N/mm2. Calculate the number and size of studs required to fix the cylinder cover, assuming the permissible stress in the studs as 33 MPa. OR The cylinder head of a steam engine is subjected to a steam pressure of 0.7 N/mm2. It is held in position by means of 12 bolts. A soft copper gasket is used to make the joint leak-proof. The effective diameter of cylinder is 300 mm. Find the size of the bolts so that the stress in the bolts is not to exceed 100 MPa.

Model Question Paper:

(SEE)

PART-A

1. List the general Considerations in machine design 5
2. Explain man-machine joint system 5
3. List with examples five basic forms for shape of product 5

PART-B

1. List the different types of riveted joints and rivets. 5
2. Two plates of 10 mm thickness each are to be joined by means of a single riveted double strap butt joint. Determine the rivet diameter; rivet pitch, strap thickness and efficiency of the joint. Take the working stresses in tension and shearing as 80 MPa and 60 MPa respectively. 15
2. OR
1. Discuss the stresses induced in the Screw fasteners when it is subjected to static loading. 5
2. The cylinder head of a steam engine is subjected to a steam pressure of0.7 N/mm2. It is held in position by means of 12 bolts. A soft copper gasket is used to make the joint leak-proof. The effective diameter of cylinder is 300 mm. Find the size of the bolts so that the stress in the bolts is not to exceed 100 MPa.
1. Explain the effect of keyway cut into the shaft. 5
2. Select the diameter of a solid steel shaft to transmit 20kw at 200 rpm. The ultimate shear stress for the steel may be taken as 360mpa and factor of safety as
4. If a hallow shaft is to be used in place of solid shaft , finds the inside and outside diameter when the ratio of inside to outside is 0.5. 15
5. OR
1. Explain how the shafts are designed when it is subjected to twisting moment only on stiffness/strength basis.
2. Select the diameter of a solid steel shaft for a pair of wheels of a railway wagon carries a load of 50KN on each axle box acting at a distance of 100mm outside the wheel base. The gauge of the rails is 1.4 m ,if the stress is not to exceed 100Mpa. 15
1. Explain the applications of spring 5
2. Design a close coiled helical compression spring for a service load ranging from 2250 N to 2750 N. The axial deflection of the spring for the load range is 6 mm. Assume a spring index of
7. The permissible shear stress intensity is 420 MPa and modulus of rigidity, G = 84 kN/mm2. Neglect the effect of stress concentration. 15
8. OR
1. Classify the springs. 5
2. Design the spring for the buffers of a rail wagon of mass 20 tonnes is moving with a velocity of 2 m/s. It is brought to rest by two buffers with springs of 300 mm diameter. The maximum deflection of springs is 250 mm. The allowable shear stress in the spring material is600 MPa. 15

PART C

1. Design a knuckle joint to connect two mild steel bars under a tensile load of 25 kN. The allowable stresses are 65 MPa in tension, 50 MPa in shear and 83 MPa in crushing. 25
2. OR Design a rigid flange coupling to transmit a torque of 250 N-m between two coaxial shafts. The shaft is made of alloy steel, flanges out of cast iron and bolts out of steel. Four bolts are used to couple the flanges. The shafts are keyed to the flange hub. The permissible stresses are given below: Shear stress on shaft =100 MPa Bearing or crushing stress on shaft =250 MPa Shear stress on keys =100 MPa Bearing stress on keys =250 MPa Shearing stress on cast iron =200 MPa Shear stress on bolts =100 MPa 25

For detail syllabus of all other subjects of BE Mechanical, C15 scheme do visit Mechanical 5th Sem syllabus for C15 scheme.

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